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A microphone is moving in air towards a stationary source of sound. The detected frequency is 106 Hz greater than the emitted frequency. When the microphone moves at the same speed toward the same stationary source in an unkown liquid, the detected frequency is only 41.0 Hz greater than the emitted frequency. What is the speed of sound in the unkown liquid?
A plane sinusoidal electromagnetic wave carries 16.0 J of energy through a small window of area 0.20m2 in 10.0 s. What is the intensity of the wave
If you are cruising down the road at 50 mph and a policeman with a radar gun (wavelength 1 cm) reflects radar light off your bumper, what wavelength of radar light does he get back
An object's true weight is 135N. When it is completely submerged in water, what is the density of the object
The Cosmoclock 21 Ferris wheel in Yokohama City, Japan, has a diameter of 100 m, Find the speed of the passengers when the Ferris wheel is rotating at this rate
To keep a door closed, a wooden stick is wedged between the floor and the doorknob. The stick exerts at B a 45-lb force directed along line AB. Swap that force with an equivalent force-couple system at C.
A dipole is located at the origin, and is composed of charged particles with charge +e and -e, Calculate the force on a proton due to this dipole at a location m.
A 2.00-cm-diameter parallel-plate capacitor with a spacing of 0.600mm is charged to 300V, What is the total energy stored in the electric field
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
If you had been tasked to remove the water from New Orleans after Hurricane Katrina would you select a radial flow, mixed flow or axial flow pump for this purpose? Explain it briefly.
Four identical cells, each of emf 2V are joined in parallel providing supply of current to external circuit consisting of two 15 ohm resistors joined in parallel, Calculate the internal resistance of each cell
How numerous forces act on the brick
A converging lens (f = 14.9 cm) is located 24.6 cm to the left of a diverging lens (f = -7.07 cm). Locate the final image of the stamp relative to the diverging lens
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